TY  - JOUR
A1  - Frey, H C
A1  - Rouphail, N M
A1  - Zhai, H 
A1  - Farias, T L
A1  - Goncalves, G A
T1  - Comparing real-world fuel consumption for diesel- and hydrogen-fueled transit buses and implication for emissions.
Y1  - 2007/06/
N1  - R831835
JF  - TRANSPORTATION RESEARCH PART D: TRANSPORT AND ENVIRONMENT
J1  - NONE
VL  - 12
IS  - 4
SP  - 281
EP  - 291
ER  - 


TY  - JOUR
A1  - Frey, H C
A1  - Rouphail, N M
A1  - Zhai, H 
T1  - Link-based emission factors for heavy-duty diesel trucks based on real-world data.
Y1  - 2008/11/10
N1  - R831835
JF  - TRANSPORTATION RESEARCH RECORD:JOURNAL OF THE TRANSPORTATION RESEARCH BOARD
VL  - 2058
SP  - 23
EP  - 32
PB  - Transportation Research Board
ER  - 


TY  - JOUR
A1  - Shay, E 
A1  - Khattak, A J
T1  - Automobiles, trips, and neighborhood type: comparing environmental measures.
Y1  - 2007/12/
N1  - R831835
JF  - TRANSPORTATION RESEARCH RECORD: JOURNAL OF THE TRANSPORTATION RESEARCH BOARD
VL  - 2010
SP  - 73
EP  - 82
ER  -